I've seen bits of the same quote from Daniel Chambliss about excellence in Olympic swimmers. I saw it in Billy Oppenheimer's Sunday email back in September, and James Clear had it in his last Thursday... so now you get it too.
Excellence is created by doing the little things, one on top of the other. The little things that are going to make a ball fly 10' farther, add 3 mph of velo to your fastball, make you swim .01 faster. 
I do reference two swimmers who tied in the 1984 Olympics. This is the background on it. I am definitely not disparaging them in any way, merely making a point about whether a hundredth of a second could have been gained anywhere else to make either of them the solo gold medalist. (In retrospect, I think it's pretty cool they tied. I still remember that, 40 years hence. I still remembered their last names, but not their first names, so I used neither.)

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